Singh would now act as the administrator of his Twitter account and will keep sharing inspirational quotes from an innumerable number of speeches made by Kalam and his books like ‘Wings of Fire’, ‘India 2020’ and ‘Ignited Minds’.

Another book ‘Advantage India’, co-authored by Kalam and Singh, is due to release later the year.

Since February 2011, Kalam had been regularly posting his views on contemporary issues facing the country besides sending out inspirational messages on Twitter.

He had more than 1.4 million followers on the microblogging site which is now flooded with his one-liners.

Hashtag ‘KalamSir’ has been trending on Twitter in India since last night.